Nokia Nokia Certifications 4A0-C01 Questions & Answers

• Question 461:

  Click on the exhibit.

  

  Initially, all links along the path R1-R2-R4-R6 have 400Mbps unreserved bandwidth and all links along the path R1-R3-R5-R6 have 800Mbps unreserved bandwidth. Shared Explicit reservation style is used and Make-Before-Break is enabled. Both fully loose LSPs have been signaled as shown. Later, the configured bandwidth for LSP-1 is changed to 400Mbps. Which of the following is TRUE?

  A. After a new path for LSP-1 is established on R1-R3-R5-R6, the old path is torn down.

  B. After the old path for LSP-1 is torn down, the new path is established on R1-R3-R5-R6.

  C. LSP-1 will stay on R1-R2-R4-R6 because there is enough bandwidth on the existing path.

  D. LSP-1 will be torn down because CSPF fails to find a new path.

  Correct Answer: C

• Question 462:

  Which of the following statements best describes an FDB used in a VPLS service?

  A. A VPLS service does not use an FDB.

  B. An FDB is maintained on the PE router to track MAC addresses learned from all traffic through the router.

  C. An FDB is maintained on the PE router to track MAC addresses learned from all VPLS services on the router.

  D. A separate FDB is maintained for each VPLS service to track MAC addresses learned from each service.

  E. For each VPLS service, two FDBs are maintained to track MAC addresses; one for unicast traffic and one for multicast and broadcast traffic.

  Correct Answer: D

• Question 463:

  Which of the following represents a SAP on a physical port configured with Q-in-Q encapsulation?

  A. sap 1/1/1

  B. sap 1/1/1:5

  C. sap 1/1/1:5:5

  D. sap 1/1/1:10.100

  Correct Answer: D

• Question 464:

  Facility fast reroute with node protection is enabled for an LSP, which of the following is FALSE?

  A. Each PLR signals a bypass tunnel that avoids the next-hop downstream router.

  B. When a failure occurs, the PLR pushs an additional label onto the label stack.

  C. No bypass tunnel is established if the PLR cannot provide node protection.

  D. The head-end router sets the local protection desired flag in the session attribute object.

  Correct Answer: C

• Question 465:

  Which protocol is used to signal the outer label for a VPN service?

  A. RSVP

  B. IPCP

  C. TLDP

  D. PPP

  E. Either RSVP or LDP

  Correct Answer: E

• Question 466:

  Click on the exhibit.

  

  A fully loose LSP MtoR6" is enabled with FRR protection. All links have the same cost. After the link between R2 and R4 goes down, FRR protection repairs the LSP and traffic traverses on R1-R2-R7-R8-R4R6. By default, which of the following about this LSP on an Alcatel-Lucent 7750 SR is FALSE?

  A. The LSP will switch to R1-R3-R5-R6 after the resignal timer expires.

  B. The old primary path and its detours are torn down after the new primary path is established.

  C. CSPF must be enabled to find a more optimal path.

  D. The traffic is switched to R1-R3-R5-R6 in an MBB fashion.

  Correct Answer: A

• Question 467:

  Which of the following about LSPs is FALSE?

  A. IGP-based LSPs are calculated based on information contained in routing tables.

  B. Constraint-based LSPs are calculated using the head-end router's TED.

  C. Constraint-based LSPs must use RSVP-TE signaling.

  D. IGP-based LSPs must use LDP signaling.

  Correct Answer: D

• Question 468:

  Fill in the blanks: A ________device has all interfaces inside the provider domain, and a _______ device has at least one interface outside the provider domain.

  A. PE, P

  B. P, PE

  C. PE, CE

  D. CE, PE

  E. CE, P

  Correct Answer: B

• Question 469:

  Which of the following about Link TLVs found inside Type 10 Opaque LSAs is FALSE?

  A. Link TLVs are used to advertise administrative group information.

  B. Link TLVs are exchanged once RSVP is enabled on the interfaces.

  C. Link TLVs are used to advertise router-IDs.

  D. Link TLVs are used to advertise bandwidth information.

  Correct Answer: C

• Question 470:

  Which of the following SAPs will forward tagged frames with an outer VLAN tag of 200? (Choose 3)

  A. sap 1/1/1

  B. sap 1/1/1:*

  C. sap 1/1/1:*.0

  D. sap 1/1/1:0*

  E. sap 1/1/1:200.*

  F. sap 1/1/1:300:200

  Correct Answer: ABE